Home / 1,286,374.01-1,929,839.67-387,740.57

Finding the Fourth Proportional to 1,286,374.01, 1,929,839.67 and 387,740.57

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Solution

The fourth proportional to 1,286,374.01, 1,929,839.67 and 387,740.57 is: 581,694.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,374.01 : 1,929,839.67 = 387,740.57 : x
  2. Step 2: Convert to fraction form
    1,286,374.01/1,929,839.67 = 387,740.57/x
  3. Step 3: Cross multiply
    1,286,374.01x = 1,929,839.67 × 387,740.57
  4. Step 4: Simplify right side
    1,286,374.01x = 748,277,124,005.21
  5. Step 5: Solve for x
    x = 748,277,124,005.21/1,286,374.01
  6. Step 6: Final answer
    x = 581,694.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.